One year after lifting its long-standing two-child limit, Vietnam is offering incentives for people to have more babies as the communist country risks getting old before it gets rich. A new population law and regulations coming into effect on Wednesday extend maternity leave from six to seven months for mothers having a second child as well as offering financial help. If Hanoi residents Nguyen Kim Bich and her husband have a second child, she will get an extra month of maternity leave, free...